VBMS 303- EXAM 2 questions with verified solutions

VBMS 303- EXAM 2 questions with
verified solutions

Yew poisoning - correct answer ✔✔1. Cause
-ingestion of ornamental yews (Taxus spp.)


-Taxine-


2. Occurrence
- ingestion
- all species


3. Clinical signs
a. Acute - death
b. Subacute - ataxia,
- colic, diarrhea, dyspnea
- coma, seizures
4. Diagnosis
a. History of ingestion
b. Postmortem examination
- rumen or gastric contents
5. Treatment
- Nonspecific

,6. Food Safety
1. Milk withholding - 2 days
2. Meat withholding - 35 days
3. Drug withholding - variable


Hydrocyanic (Prussic) Acid Poisoning - correct answer ✔✔1. Cause
a. Many plant sources
- burmuda, milo, sudan grass, chokecherry
b. Cyanogenic glucosides
- HCN
2. Occurrence
a. Wilted, frosted plants
b. Rapid consumption
c. Drying increases content.
3. Pathogenesis
a. Anoxia (lack of oxygen), tissue asphyxia
b. cerebral anoxia
4. Clinical Signs
a. Acute
b. Dyspnea (gasping for breath), restlessness
c. convulsions
5. Diagnosis
a. Test plants

, Sweet Clover Poisoning - correct answer ✔✔1. Cause
a. Coumarin mold dicoumarin (anti-coagulant)
b. Antagonist of vitamin K
c. Blood does not clot
2. Occurrence
a. Cattle
b. Moldy sweet clover
3. Clinical Signs
a. Hemorrhages
b. Stiffness
4. Diagnosis
a. History (know what they're eating)
5. Treatment
a. Vitamin K
6. Prevention
a. Select a clover variety with low coumarin
b. Alternate with feed sources


Mycotoxicoses - correct answer ✔✔A. Occurrence
a. Due to feed contaminated with toxins from fungi or molds
B. Cause
a. Mycotoxins
C. Effects